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dvbsuboverlay: handle video/x-raw(ANY) if downstream supports the GstVideoOverlayCompositionMeta API
https://bugzilla.gnome.org/show_bug.cgi?id=726463
This commit is contained in:
Matthieu Bouron
Sebastian Dröge
parent
6da1c48970
commit
19724f6ece
1 changed files with 246 additions and 30 deletions
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@ -68,17 +68,24 @@ enum
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#define VIDEO_FORMATS GST_VIDEO_OVERLAY_COMPOSITION_BLEND_FORMATS
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#define DVBSUB_OVERLAY_CAPS GST_VIDEO_CAPS_MAKE(VIDEO_FORMATS)
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#define DVBSUB_OVERLAY_ALL_CAPS DVBSUB_OVERLAY_CAPS ";" \
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GST_VIDEO_CAPS_MAKE_WITH_FEATURES ("ANY", GST_VIDEO_FORMATS_ALL)
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static GstStaticCaps sw_template_caps = GST_STATIC_CAPS (DVBSUB_OVERLAY_CAPS);
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static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE (VIDEO_FORMATS))
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GST_STATIC_CAPS (DVBSUB_OVERLAY_ALL_CAPS)
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);
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static GstStaticPadTemplate video_sink_factory =
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GST_STATIC_PAD_TEMPLATE ("video_sink",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE (VIDEO_FORMATS))
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GST_STATIC_CAPS (DVBSUB_OVERLAY_ALL_CAPS)
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);
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static GstStaticPadTemplate text_sink_factory =
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@ -101,7 +108,9 @@ static GstStateChangeReturn gst_dvbsub_overlay_change_state (GstElement *
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#define gst_dvbsub_overlay_parent_class parent_class
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G_DEFINE_TYPE (GstDVBSubOverlay, gst_dvbsub_overlay, GST_TYPE_ELEMENT);
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static GstCaps *gst_dvbsub_overlay_getcaps (GstDVBSubOverlay * render,
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static GstCaps *gst_dvbsub_overlay_get_videosink_caps (GstDVBSubOverlay *
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render, GstPad * pad, GstCaps * filter);
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static GstCaps *gst_dvbsub_overlay_get_src_caps (GstDVBSubOverlay * render,
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GstPad * pad, GstCaps * filter);
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static GstFlowReturn gst_dvbsub_overlay_chain_video (GstPad * pad,
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@ -373,7 +382,7 @@ gst_dvbsub_overlay_query_src (GstPad * pad, GstObject * parent,
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GstCaps *filter, *caps;
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gst_query_parse_caps (query, &filter);
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caps = gst_dvbsub_overlay_getcaps (render, pad, filter);
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caps = gst_dvbsub_overlay_get_src_caps (render, pad, filter);
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gst_query_set_caps_result (query, caps);
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gst_caps_unref (caps);
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ret = TRUE;
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@ -428,39 +437,236 @@ gst_dvbsub_overlay_event_src (GstPad * pad, GstObject * parent,
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return ret;
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}
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/**
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* gst_dvbsub_overlay_add_feature_and_intersect:
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*
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* Creates a new #GstCaps containing the (given caps +
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* given caps feature) + (given caps intersected by the
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* given filter).
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*
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* Returns: the new #GstCaps
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*/
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static GstCaps *
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gst_dvbsub_overlay_getcaps (GstDVBSubOverlay * render, GstPad * pad,
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GstCaps * filter)
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gst_dvbsub_overlay_add_feature_and_intersect (GstCaps * caps,
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const gchar * feature, GstCaps * filter)
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{
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GstPad *otherpad;
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GstCaps *caps, *templ;
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int i, caps_size;
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GstCaps *new_caps;
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if (pad == render->srcpad)
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otherpad = render->video_sinkpad;
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else
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otherpad = render->srcpad;
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new_caps = gst_caps_copy (caps);
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templ = gst_pad_get_pad_template_caps (otherpad);
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/* we can do what the peer can */
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caps = gst_pad_peer_query_caps (otherpad, filter);
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if (caps) {
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GstCaps *temp;
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/* filtered against our padtemplate */
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temp = gst_caps_intersect (caps, templ);
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gst_caps_unref (templ);
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gst_caps_unref (caps);
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/* this is what we can do */
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caps = temp;
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} else {
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/* no peer, our padtemplate is enough then */
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caps = templ;
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caps_size = gst_caps_get_size (new_caps);
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for (i = 0; i < caps_size; i++) {
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GstCapsFeatures *features = gst_caps_get_features (new_caps, i);
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gst_caps_features_add (features, feature);
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}
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gst_caps_append (new_caps, gst_caps_intersect_full (caps,
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filter, GST_CAPS_INTERSECT_FIRST));
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return new_caps;
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}
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/**
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* gst_dvbsub_overlay_intersect_by_feature:
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*
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* Creates a new #GstCaps based on the following filtering rule.
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*
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* For each individual caps contained in given caps, if the
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* caps uses the given caps feature, keep a version of the caps
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* with the feature and an another one without. Otherwise, intersect
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* the caps with the given filter.
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*
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* Returns: the new #GstCaps
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*/
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static GstCaps *
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gst_dvbsub_overlay_intersect_by_feature (GstCaps * caps,
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const gchar * feature, GstCaps * filter)
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{
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int i, caps_size;
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GstCaps *new_caps;
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new_caps = gst_caps_new_empty ();
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caps_size = gst_caps_get_size (caps);
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for (i = 0; i < caps_size; i++) {
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GstStructure *caps_structure = gst_caps_get_structure (caps, i);
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GstCapsFeatures *caps_features =
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gst_caps_features_copy (gst_caps_get_features (caps, i));
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GstCaps *filtered_caps;
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GstCaps *simple_caps =
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gst_caps_new_full (gst_structure_copy (caps_structure), NULL);
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gst_caps_set_features (simple_caps, 0, caps_features);
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if (gst_caps_features_contains (caps_features, feature)) {
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gst_caps_append (new_caps, gst_caps_copy (simple_caps));
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gst_caps_features_remove (caps_features, feature);
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filtered_caps = gst_caps_ref (simple_caps);
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} else {
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filtered_caps = gst_caps_intersect_full (simple_caps, filter,
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GST_CAPS_INTERSECT_FIRST);
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}
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gst_caps_unref (simple_caps);
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gst_caps_append (new_caps, filtered_caps);
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}
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return new_caps;
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}
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static GstCaps *
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gst_dvbsub_overlay_get_videosink_caps (GstDVBSubOverlay * render, GstPad * pad,
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GstCaps * filter)
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{
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GstPad *srcpad = render->srcpad;
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GstCaps *peer_caps = NULL, *caps = NULL, *dvdsub_overlay_filter = NULL;
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if (filter) {
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/* filter caps + composition feature + filter caps
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* filtered by the software caps. */
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GstCaps *sw_caps = gst_static_caps_get (&sw_template_caps);
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dvdsub_overlay_filter =
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gst_dvbsub_overlay_add_feature_and_intersect (filter,
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GST_CAPS_FEATURE_META_GST_VIDEO_OVERLAY_COMPOSITION, sw_caps);
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gst_caps_unref (sw_caps);
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GST_DEBUG_OBJECT (render, "dvdsub_overlay filter %" GST_PTR_FORMAT,
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dvdsub_overlay_filter);
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}
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peer_caps = gst_pad_peer_query_caps (srcpad, dvdsub_overlay_filter);
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if (dvdsub_overlay_filter)
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gst_caps_unref (dvdsub_overlay_filter);
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if (peer_caps) {
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GST_DEBUG_OBJECT (pad, "peer caps %" GST_PTR_FORMAT, peer_caps);
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if (gst_caps_is_any (peer_caps)) {
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/* if peer returns ANY caps, return filtered src pad template caps */
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caps = gst_caps_copy (gst_pad_get_pad_template_caps (srcpad));
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if (filter) {
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GstCaps *intersection = gst_caps_intersect_full (filter, caps,
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GST_CAPS_INTERSECT_FIRST);
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gst_caps_unref (caps);
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caps = intersection;
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}
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} else {
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/* duplicate caps which contains the composition into one version with
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* the meta and one without. Filter the other caps by the software caps */
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GstCaps *sw_caps = gst_static_caps_get (&sw_template_caps);
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caps = gst_dvbsub_overlay_intersect_by_feature (peer_caps,
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GST_CAPS_FEATURE_META_GST_VIDEO_OVERLAY_COMPOSITION, sw_caps);
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gst_caps_unref (sw_caps);
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}
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gst_caps_unref (peer_caps);
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} else {
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/* no peer, our padtemplate is enough then */
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caps = gst_pad_get_pad_template_caps (pad);
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if (filter) {
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GstCaps *intersection;
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intersection =
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gst_caps_intersect_full (filter, caps, GST_CAPS_INTERSECT_FIRST);
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gst_caps_unref (caps);
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caps = intersection;
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}
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}
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GST_DEBUG_OBJECT (render, "returning %" GST_PTR_FORMAT, caps);
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return caps;
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}
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static GstCaps *
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gst_dvbsub_overlay_get_src_caps (GstDVBSubOverlay * render, GstPad * pad,
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GstCaps * filter)
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{
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GstPad *sinkpad = render->video_sinkpad;
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GstCaps *peer_caps = NULL, *caps = NULL, *dvdsub_overlay_filter = NULL;
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if (filter) {
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/* duplicate filter caps which contains the composition into one version
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* with the meta and one without. Filter the other caps by the software
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* caps */
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GstCaps *sw_caps = gst_static_caps_get (&sw_template_caps);
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dvdsub_overlay_filter =
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gst_dvbsub_overlay_intersect_by_feature (filter,
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GST_CAPS_FEATURE_META_GST_VIDEO_OVERLAY_COMPOSITION, sw_caps);
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gst_caps_unref (sw_caps);
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}
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peer_caps = gst_pad_peer_query_caps (sinkpad, dvdsub_overlay_filter);
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if (dvdsub_overlay_filter)
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gst_caps_unref (dvdsub_overlay_filter);
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if (peer_caps) {
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GST_DEBUG_OBJECT (pad, "peer caps %" GST_PTR_FORMAT, peer_caps);
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if (gst_caps_is_any (peer_caps)) {
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/* if peer returns ANY caps, return filtered sink pad template caps */
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caps = gst_caps_copy (gst_pad_get_pad_template_caps (sinkpad));
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if (filter) {
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GstCaps *intersection = gst_caps_intersect_full (filter, caps,
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GST_CAPS_INTERSECT_FIRST);
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gst_caps_unref (caps);
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caps = intersection;
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}
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} else {
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/* return upstream caps + composition feature + upstream caps
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* filtered by the software caps. */
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GstCaps *sw_caps = gst_static_caps_get (&sw_template_caps);
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caps = gst_dvbsub_overlay_add_feature_and_intersect (peer_caps,
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GST_CAPS_FEATURE_META_GST_VIDEO_OVERLAY_COMPOSITION, sw_caps);
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gst_caps_unref (sw_caps);
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}
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gst_caps_unref (peer_caps);
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} else {
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/* no peer, our padtemplate is enough then */
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caps = gst_pad_get_pad_template_caps (pad);
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if (filter) {
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GstCaps *intersection;
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intersection =
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gst_caps_intersect_full (filter, caps, GST_CAPS_INTERSECT_FIRST);
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gst_caps_unref (caps);
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caps = intersection;
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}
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}
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GST_DEBUG_OBJECT (render, "returning %" GST_PTR_FORMAT, caps);
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return caps;
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}
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static gboolean
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gst_dvbsub_overlay_can_handle_caps (GstCaps * incaps)
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{
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gboolean ret;
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GstCaps *caps;
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GstStaticCaps static_caps = GST_STATIC_CAPS (DVBSUB_OVERLAY_CAPS);
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caps = gst_static_caps_get (&static_caps);
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ret = gst_caps_is_subset (incaps, caps);
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gst_caps_unref (caps);
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return ret;
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}
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/* only negotiate/query video overlay composition support for now */
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static gboolean
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gst_dvbsub_overlay_negotiate (GstDVBSubOverlay * overlay)
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@ -521,7 +727,11 @@ gst_dvbsub_overlay_setcaps_video (GstPad * pad, GstCaps * caps)
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gst_dvbsub_overlay_negotiate (render);
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GST_DEBUG_OBJECT (render, "ass renderer setup complete");
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if (!render->attach_compo_to_buffer &&
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!gst_dvbsub_overlay_can_handle_caps (caps))
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goto unsupported_caps;
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GST_DEBUG_OBJECT (render, "dvbsub overlay renderer setup complete");
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out:
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gst_object_unref (render);
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@ -535,6 +745,12 @@ invalid_caps:
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ret = FALSE;
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goto out;
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}
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unsupported_caps:
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{
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GST_ERROR_OBJECT (render, "Unsupported caps: %" GST_PTR_FORMAT, caps);
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ret = FALSE;
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goto out;
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}
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}
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static void
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@ -933,7 +1149,7 @@ gst_dvbsub_overlay_query_video (GstPad * pad, GstObject * parent,
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GstCaps *filter, *caps;
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gst_query_parse_caps (query, &filter);
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caps = gst_dvbsub_overlay_getcaps (render, pad, filter);
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caps = gst_dvbsub_overlay_get_videosink_caps (render, pad, filter);
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gst_query_set_caps_result (query, caps);
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gst_caps_unref (caps);
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ret = TRUE;
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